Provided is a phase-lock loop gear shifter that includes: an input for receiving a loop gain that is dynamically controllable; an input for receiving a phase-error signal; a subtractor configured to provide a gain difference between the loop gain input at a second time and the loop gain input at a first time, the first time being earlier than the second time; a module that determines a characteristic phase-error value based on the phase-error signal; and a multiplier that multiplies the gain difference by the characteristic phase-error value to provide a control-signal correction value.